The useful question is not just “Are you licensed?” It is “Who is legally permitted to perform each part of this installation at my address?” Start with the electrical contractor, identify the business doing the fuel work, and ask the local building department which other approvals apply. The FTC recommends confirming a contractor’s license with state or county government and requesting proof of insurance.[1]
This guide explains the qualification scope to ask about. For the actual record searches, insurance follow-up and manufacturer checks, use How to Verify Licence, Insurance and Certification. Return to the installer-selection checklist for the broader hiring decision.
At a glance
- Match permissions to electrical work, fuel work and any separately regulated construction—not merely to the words “generator installer.”
- Ask which legal business holds the contract and which licensed people or businesses perform each trade.
- Check the project’s state and local requirements; do not transfer another state’s license classes to your address.
- Treat manufacturer authorization, government licensing, insurance and project permits as separate checks.
- The official paths below cover selected electrical licensing questions in Texas, Florida and California, not a researched 50-state licensing database.
A national framework, not a universal license checklist
Use three layers: trade permission, project approval and product capability. The government authority determines who may do the regulated work; the permitting office determines the approvals for the particular project; the manufacturer describes its own installation and service roles. These are separate questions, so request evidence for each rather than treating a brand logo as the answer to all three.
The state examples show why one national credential label is inadequate.
Texas says non-exempt electrical work must be performed by licensed people through a licensed electrical contractor.[2]
Florida’s electrical board licenses individuals and requires a properly licensed individual to qualify the electrical business.[4]
California publishes an electrical contractor classification and a separate contractor lookup.[9][3]
Before comparing credentials, give the local building department the property address, generator type and fuel, and a written scope covering the transfer switch, panel changes, fuel piping, pad and trenching. Ask which licensing authorities and permit offices govern each part. This is a homeowner planning framework, not a legal determination that a particular company can perform your job.
Which trade permissions should you ask about?
Use this table to divide the proposal into work packages. The entries are questions for the relevant authority, not a claim that every jurisdiction uses these license names.
| Work package | Permission to ask the authority about | What the proposal should identify |
|---|---|---|
| Generator wiring, transfer equipment and panel changes | Electrical contractor authorization; required individual electrical credentials and supervision | Electrical business, license number, responsible license holder and the included electrical scope |
| Natural-gas piping and connections | Applicable plumbing, gas-fitting or mechanical authorization for this specific fuel work | Fuel contractor, permitted scope, and who coordinates meter or supply changes with the utility |
| Propane tank, regulators and piping | Applicable LP-gas authority, supplier permissions and local approvals | Tank/piping business and responsibility for storage, supply and generator connections |
| Pad, excavation or structural work | Whether construction or specialty-contractor rules apply to that work | Named business, scope and any exclusions or subcontractors |
| Overall contract and permit coordination | Whether a general or other contractor authorization or local registration is required | Contracting entity, permit applicant and party responsible for corrections |
| Startup and later warranty service | Manufacturer’s applicable role and equipment-specific capability, separately from legal trade permission | Startup provider and warranty-service provider, if different |
Do not assume that an electrical credential permits fuel work, or that the fuel supplier handles the transfer switch. Ask the authority to confirm the applicable scope when a contractor proposes to cover multiple trades. A turnkey price should still name the businesses behind those work packages.
Contractor business versus individual electrician
A person’s credential and a business’s authority to contract are not always the same record. In Texas, the electrical program explicitly distinguishes individual and business licenses and says non-exempt work must occur through a licensed electrical contractor.[2]
Florida supplies a useful second example: an electrical business must be qualified by a properly licensed individual, and the approved business entity appears on that contractor’s individual license. The board tells consumers to check the business and then the individual who qualifies it.[4]
Ask for the legal contracting name, any trading name, the relevant license numbers and the electrical and fuel subcontractors. If the proposal names one company but the license names another, ask for the documented relationship before deciding that the evidence matches. A similar name alone is not enough; an unfamiliar name alone is not proof of wrongdoing.
Official state verification paths: selected coverage
Coverage boundary: These are checked first-party starting points for electrical contractor qualification in three states. They do not establish complete generator-project requirements in those states, cover every fuel trade, or replace county/city checks. No individual installer has been verified for this article.
Texas: electrical work and contractor structure
Start at the Texas Department of Licensing and Regulation electricians page. Its Search Licenses section leads to the electrical lookup. TDLR states that anyone performing or offering non-exempt electrical work in Texas must be licensed and perform it through a licensed electrical contractor.[2]
Ask for the electrical contractor business license and the relevant individual’s credential, rather than accepting only a photograph of an electrician’s card. Ask the local authority separately about local registration, project permits and the responsible regulator for natural-gas or propane work. This electrical source does not establish those fuel permissions.
Florida: match the qualifying individual to the business
Follow the Florida electrical board’s business-verification instructions. They explain searches by license number, individual name and business name through Verify a License. The board specifically recommends checking the individual after a business-name search to establish that the contractor qualifies that entity.[4]
Ask the board or local authority to explain the license category and geographical limits applicable to your address. Do not interpret a search result merely showing a business name as confirmation that every proposed task is authorized.
California: classification as well as license status
Use CSLB’s Check a License, which supports contractor number and business/personnel searches and includes complaint disclosure information.[3]
California’s C-10 electrical contractor classification describes work involving electrical wires, equipment and apparatus that generate, transmit, transform or use electrical energy.[9] It is a relevant classification to discuss for the electrical portion—not a claim that C-10 alone resolves every fuel, construction or contracting issue on a generator project. Ask CSLB and the local permitting office about the proposed division of work.
If your state is not listed
Start with your state or county government, as the FTC recommends for license confirmation.[1] Find the official contractor/electrical licensing authority and ask your local building department which body regulates the proposed fuel work. Request the exact classification or registration to search, whether the contractor and individual require separate records, and whether any claimed exemption applies to the specific scope. Record the authority’s answer rather than substituting an unofficial national list.
Is manufacturer certification required too?
Do not substitute a manufacturer badge for the trade-permission checks above. Ask what the badge actually covers: selling, installation, startup, maintenance or warranty repairs. Generac’s own documentation distinguishes authorized installers, sales dealers and service dealers; it also says air-cooled and liquid-cooled service require separate specialized training and certification.[10]
That is a Generac example, not a rule for every brand. Request the current installation instructions and warranty documents for the exact generator and transfer equipment being proposed, then confirm the relevant role with that manufacturer. Do not assume that independent installation automatically voids a warranty, or that installation authorization proves warranty-service capability.
Where permits and insurance fit
A license inquiry asks whether the contractor is permitted to undertake a category of work. A permit inquiry concerns the particular project. Keep a separate list of required permits, applicant, inspections and correction responsibility; the generator permits guide covers that planning task. Generic permit guidance is not a substitute for checking the people and businesses doing the work.
Insurance is also a separate evidence request. The FTC recommends asking the contractor for proof.[1] Use the verification walkthrough to follow up with the insurer or agent rather than treating “licensed and insured” in a quote as confirmed coverage.
Before you shortlist an installer
Ask each candidate to return a scope sheet naming the contracting business, electrical contractor, fuel contractor, applicable credentials, permit responsibilities and manufacturer-specific startup/service arrangements. Resolve gaps before relying on the proposal. Recheck the records if the contractor, scope or start date changes.
The generator provider directory can help you discover businesses to contact, but listings are unverified and are not endorsements. Backup Generator Guide has not confirmed a listed business’s licensing, insurance, brand authorization or service at your address. Use the installer-selection parent guide to compare complete proposals after your qualification questions have been answered.